“Don’t screw this up,” she joked to Clinton staff members, even as the Wall Street Journal reported Warren was under serious vetting as Clinton’s vice presidential choice. CNN reported that Warren was in New York City for a fundraising trip.

During her talk to the staff members at the Brooklyn office, she discussed the implications of this election for the Supreme Court, the Dodd-Frank financial regulations and Obamacare.

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ABC News said Clinton staffers quickly deleted photos and videos documenting Warren’s trip after they began appearing on social media.

“I’m ready,” she said last week. “I’m ready to jump in this fight and make sure that Hillary Clinton is the next president of the United States and be sure that Donald Trump gets nowhere near the White House.”

“For so long Elizabeth Warren has maintained positions that align with Bernie, and now she just seems to have abandoned that in favor of supporting the establishment’s candidate,” Gale Brown said during a protest Sunday outside of a venue where Warren was speaking. Brown said she was a longtime supporter of Vermont Sen. Bernie Sanders, Clinton’s opponent in the Democratic primary race.

“We feel that this is completely not in alignment with everything that she has been preaching her entire career,” said fellow protester Jaime Guerin. “We’re never going to have a government for the people as long as corporate interests continue to govern our politics.”